Technical Specification Sheet Document No. 149-919 December 12, 2017 Siemens Industry, Inc.Page 1 of 2 Immersion Well Temperature Sensors Thermistor/RTD4 to20mA Description Siemens Immersion Well Temperature Sensors monitor and transmit changes in liquid temperature to the HVAC control system. The sensor resistance varies proportionally to the actual temperature being measured. All sensors are fully assembled with stainless steel thermowells, and are available in 2.5-inch, 4-inch and 6-inch insertion depths. Multiple output signals are available to ensure compatibility with most common HVAC control systems. Features • Variety of sensing elements. • Suitable for hot or chilled fluids. • Responsive to temperature changes. • Accurate and reliable indication of temperature. • Familiar installation requires no special tools. Specifications Output Signals100k Ω Thermistor 10k Ω Type 2 Thermistor 10k Ω Type 3 Thermistor 1k Ω @ 32°F Ni RTD 1k Ω @ 70°F Ni RTD 1k Ω Pt RTD (375a) 1k Ω Pt RTD (385a) 4 to 20 mA • 20°F to 70°F • 30°F to 250°F • 32°F to 212°F Well Material300 Series Stainless Steel Lead-free External Connection Threads1/2-inch – 14 NPT Conduit Connection Threads 1/2-inch – 14 NPSMI NOTE: Not for use in potable water systems.Information in this document is based on specifications believed correct at the time of publication. The right is reserved to make changes as design improvements are introduced. Product or company names mentioned herein may be the trademarks of their respective owners. © 2017 Siemens Industry, Inc. Siemens Industry, Inc. Building Technologies Division 1000 Deerfield Parkway Buffalo Grove, IL 60089-4513 USA Tel. +1-847-215-1000 Your feedback is important to us. If you have comments about this document, please send them to SBT_technical.editor.us.sbt@siemens.com Document No. 149-919 Printed in the USA Page 2 of 2 Table 1. Product Ordering Information. Output Signal Insertion Depth Measuring RangeAccuracyProduct Number 100K Ω Thermistor 2.5 inches 0°F to 250°F (-18°C to 121°C) ±0.50°F (±0.28°C) @ 77°F (25°C) 536-777-25 4 inches536-777-40 6 inches536-777-60 10K Ω Type II Thermistor 2.5 inches ±0.4°F (±0.22°C) @ 77°F (25°C) QAE2030.005 4 inchesQAE2030.010 6 inchesQAE2030.015 10K Ω Type III Thermistor 2.5 inchesQAE2032.005 4 inchesQAE2032.010 6 inchesQAE2032.015 1K Ω @ 32°F Ni RTD 2.5 inches ±0.72°F (±0.4°C) @ 32°F (0°C) QAE2020.005 4 inchesQAE2020.010 6 inchesQAE2020.015 1K Ω @ 70°F Ni RTD 2.5 inchesQAE2021.005 4 inchesQAE2021.010 6 inchesQAE2021.015 1K Ω Pt RTD (375a) 2.5 inches ±0.54°F (±0.3°C) @ 32°F (0°C) 544-577-25 4 inches544-577-40 6 inches544-577-60 1K Ω Pt RTD (385a) 2.5 inchesQAE2012.005 4 inchesQAE2012.010 6 inchesQAE2012.015 4 to 20 mA 2.5 inches 20°F to 70°F (-7° to 21°C) 536-774-25 4 inches536-774-40 6 inches536-774-60 2.5 inches 30°F to 250°F (-1°C to 121°C) 536-767-25 4 inches536-767-40 6 inches536-767-60 2.5 inches 32°F to 212°F (0°C to 100°C) 544-562-25 4 inches544-562-40 6 inches544-562-60 Table 2. Accessories Information. DescriptionPart Number Repair Kits* Repair Kit, 4 to 20 mA, 30°F to 250°F536-767-RK Repair Kit, 4 to 20m A, 20°F to 70°F536-774-RK Repair Kit, 100k ohm Thermistor536-777-RK Repair Kit, 4 to 20 mA, 32°F to 212°F544-562-RK Repair Kit, PT 1k Ohm RTD (375)544-577-RK Repair Kit, PT 1k Ohm RTD (385)AQE2012 Repair Kit, NI 1k Ohm @ 32°F RTDAQE2020 Repair Kit, 10k Ohm Type 2 ThermistorAQE2030 Repair Kit, 10k Ohm Type 3 ThermistorAQE2032 Thermowells Immersion Well, 2.5-inchAQE2000.005 Immersion Well, 4-inchAQE2000.010 Immersion Well, 6-inchAQE2000.015 * Repair kits include replacement sensing element, temperature transmitter (4 to 20 mA models only), and related hardware.Next >